Dynamic detail with smoothing
If you hold down the Shift key while making a brush stroke, the Smooth Brush will become active until you release the Shift key.

Sculptris uses what people call auto-relax smoothing.  

I don't believe that Blender currently has anything analogous to that feature.

There is a thread hosted on Blender Artists that has been going for a couple years now and it's topic is Dynatopo sculpting.  

There are many tips sprinkled here and there if you read through the whole thing.  

http://blenderartists.org/forum/showthread.php?264568-Dyntopo-tests/page249&amp;highlight=sculpting